12021220011149 has 2 divisors, whose sum is σ = 12021220011150. Its totient is φ = 12021220011148.

The previous prime is 12021220011137. The next prime is 12021220011257. The reversal of 12021220011149 is 94111002212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11972416573924 + 48803437225 = 3460118^2 + 220915^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021220011149 - 2⁴ = 12021220011133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021220011109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010610005574 + 6010610005575.

It is an arithmetic number, because the mean of its divisors is an integer number (6010610005575).

Almost surely, 2^{12021220011149} is an apocalyptic number.

It is an amenable number.

12021220011149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021220011149 is an equidigital number, since it uses as much as digits as its factorization.

12021220011149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 12021220011149 in words is "twelve trillion, twenty-one billion, two hundred twenty million, eleven thousand, one hundred forty-nine".